S. Suzuki et al., TIME-OF-FLIGHT MASS AND PHOTOELECTRON-SPECTROSCOPY STUDY OF LACN-, Zeitschrift fur Physik. D, Atoms, molecules and clusters, 40(1-4), 1997, pp. 407-409
Mass spectra of LaCn- were taken by using a laser-vaporization source
(LVS) and pulsed are cluster ion source (PACIS) applied to La-carbon c
omposite rods (1:130 atomic ratio). The mass spectrum using the LVS wi
th annealing procedure has shown several magic numbers for LaCn- (n =
44, 50, 60, and 70), whereas only small LaC-n (up to n = 14) have been
observed in the mass spectrum using the PACIS. Photoelectron spectra
of some of these have been measured using a magnetic-bottle type time-
of-flight electron spectrometer. These results indicate the exsistence
of a few conformational isomers for small La-containing carbon cluste
r negative ions LaCn- (n = 5 - 8).